unlike the Great Wall of China (which is mostly being built nowadays as tourist attraction), this is an actual historic site

About 200 kms from Bhopal near Gorakhpur village is an ancient wall situated between old Gorukhpur-Devri and Chainpur Bardi passes through many villages. Big stone pieces have been used in the construction of the wall which is 14-15 feet wide.
Archaeologists claim that it is Indias longest ancient wall. Studying its materials, the archaeologists feel the wall was built between the 10th-11th century in Raisen district in Madhya Pradesh. The length of the wall is more than 80 km, which starts from the forest adjacent to Udaipura of Gorakhpur village and stretches till, Bari Bareilly which is 100 km from Bhopal.
According to archaeologists, the ancient wall was built inside the dense jungles of Vindhyachal mountain range between 10th and 11th century by the Parmar period kings. It has cracks in some places but it is still quite strong with its height being 15 to 18 feet and width being 10 to 15 feet. At some place its width is 24 feet.